From 39268c754a1d87b13bc1b8e98d2446e7db85632a Mon Sep 17 00:00:00 2001
From: jvoisin <julien.voisin@dustri.org>
Date: Tue, 22 Dec 2020 11:59:09 +0100
Subject: [PATCH] Use a simple backoff for retrying the update

- Not sleeping might be too fast for the DNS server to restart
- Fix the link to the issue
---
 internal/home/controlupdate.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/internal/home/controlupdate.go b/internal/home/controlupdate.go
index dcf428b9..9e69617c 100644
--- a/internal/home/controlupdate.go
+++ b/internal/home/controlupdate.go
@@ -9,6 +9,7 @@ import (
 	"runtime"
 	"strings"
 	"syscall"
+	"time"
 
 	"github.com/AdguardTeam/AdGuardHome/internal/sysutil"
 	"github.com/AdguardTeam/AdGuardHome/internal/update"
@@ -46,7 +47,8 @@ func handleGetVersionJSON(w http.ResponseWriter, r *http.Request) {
 		Context.controlLock.Unlock()
 		if err != nil && strings.HasSuffix(err.Error(), "i/o timeout") {
 			// This case may happen while we're restarting DNS server
-			// https://github.com/AdguardTeam/AdGuardHome/internal/issues/934
+			// https://github.com/AdguardTeam/AdGuardHome/issues/934
+			time.Sleep(time.Duration(i) * time.Second)
 			continue
 		}
 		break